Those who don’t know (gaming) history are doomed to repeat it.
Look what I found, quite by accident, by going through Pixel’s previous games (click on the pic to get a link)

Yes, a CaveStory-ish metroidvania, where you control a squid, with an unorthodox control scheme
What does it remind you of?
Why of course, my game, Trina

As my Arts Professor said, it’s all been done before. It’s all about different treatment of the same subject matter.
Disappointed and super-excited at the same time! On the one hand I’m not original, but on the other, I’m not alone in thinking an underseas game with bizarre controls is worth experimenting with.
Has this ever happened to you? Does it discourage you? Does it make you want to do better?